Treugut H, Nyman U, Hildell J
Radiologe. 1980 Nov;20(11):558-62.
Ten healthy kidneys were studied by sequence-scans every 15 seconds following i. v. bolus-injection of metrizoate. Enhancement of renal cortex, medulla and the abdominal aorta was measured separately. The curves of the renal parenchyma are summations of three functions: perfusion, diffusion of contrast agent to the interstitial fluid, and accumulation of the enhanced urine and its excretion. The enhancement-curves of the aorta and of the renal cortex show two peaks due to recirculation and high perfusion. The curve of the renal medulla is characterized by a slow rise and lower and wider single peak. Knowledge of the normal enhancement-curves is essential for the evaluation of altered renal perfusion.
在静脉推注泛影葡胺后，每隔15秒对10个健康肾脏进行序列扫描研究。分别测量肾皮质、髓质和腹主动脉的强化情况。肾实质的曲线是三种功能的总和：灌注、造影剂向间质液的扩散以及强化尿液的积聚及其排泄。主动脉和肾皮质的强化曲线由于再循环和高灌注而显示出两个峰值。肾髓质的曲线特征是上升缓慢且有较低且较宽的单峰。了解正常强化曲线对于评估肾灌注改变至关重要。
